Mechanism for transmitting rotary motion.



No. 779,713. PATENTED JAN. 10, 1905.

J. S. KEMP.

MEGHANNM POR TRANSMITTING ROTARY MOTION. APPLIOATION FILED MAY 13, 1904.

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, diZofr'zeys Patented January 10, 1905.

PATENT QEEIQE.

JOSEPH SARGENT KEMP, OF NEWARK VALLEY,

NEW YORK.

MECHANISM FOR TRANSMITTING ROTARY MOTION.

SPECIFICATION forming part of Letters Patent No. 779,713,

dated January 10, 1905.

Application filed May 13, 1904. Serial No. 207,753.

1'0 all w/wm it may concern/.-

Be it known that I, J OSEPH SARGEN'I KEMP, a citizen of the UnitedStates, and a resident of Newark Valley, in the county of Tioga andState of New York, have invented a new and useful Improvement inMechanism for Transmitting Rotary Motion, of which the following is aspecification.

This invention relates to mechanism by which rotary motion istransmitted from the ground or traction wheel of a vehicle or otherwheeled structure to a sprocket-wheel, gearwheel, or other rotary memberof a mechanism which is mounted on such vehicle or wheeled structure;and the invention has particular reference to that class of mechanismsin which the ground-wheel is provided with a ratchet-hub from whichpower is transmitted by a clutch mechanism to the sprocket-wheel,gearwheel, or other rotary part to be driven.

The object of this invention is to provide a simple, durable, andefficient mechanism of this character in which the clutch mechanism doesnot engage directly with the ratchet-hulo of the ground-wheel, so thatthe jolts, jars, and shocks which the ground-wheel receives in travelingover the ground are not directly transmitted to the clutch mechanism andin which, furthermore, the driven sprocketwheel, gear-wheel, or otherrotary part is not required to be shifted laterally in engaging orreleasing the clutch mechanism.

This mechanism may be advantageously employed, for instance, for drivingthe beater of a manure-spreader or fertilizer-distributer from theground-wheels, and this use of the mechanism is represented in theaccompanying drawings; but the mechanism is also capable of use forother purposes and in other machines.

In the accompanying drawings, Figure 1 is a side elevation of the rearportion of a manure-spreader provided with my improved transmittingmechanism with the groundwheel and pawl-disk removed. Fig. 2 is ahorizontal section through the transmitting mechanism in line 2 2, Fig.1, on an enlarged scale. Fig. 3 is a rear elevation of the ratchethub ofthe ground-wheel. Fig. 4 is a detached perspective view of the pawl-diskand clutchhead viewed from the rear. Fig. 5 is a front elevation of theclutch-disk.

Like letters of reference refer to like parts in the several figures.

. A represents the body of a manure-spreader; a, one of the longitudinalside sills thereof; B, the rotary beater; b, the gear-wheel on thebeater-shaft, and C the driving gear-wheel which meshes with the wheel band is provided with a sprocket-pinion c.

0 represents the drive chain; D, the sprocket-wheel; E, one of theground or traction wheels, and e the axle on which the traction-wheelsare loosely mounted and which is journaled in a bearing a, secured tothe side sill a.

The hub F of the ground-wheel is provided with internal ratchet-teethf,from which rotary motion is transmitted to a pawl-disk Gr by pawls g,which are arranged on the outer or front side of said disk. Thepawl-disk is arranged adjacent to the inner or rear end of theratchetrhub F and has a hub or sleeve 9, which is fitted upon the axleand preferably secured to the same, so that both ground-wheels mountedupon the axle are rendered effective in driving the wheel D. Thepawl-disk is provided on its rear side with an annular clutch-face /l,the teeth of which project rearwardly or toward the sprocket-wheel D.The latter is mounted loosely with its hub (Z upon the sleeve or hub gof the pawl-disk and is held against movement in the longitudinaldirection of the axle between the pawl-disk G and the bearing 0' or byany other suitable means.

1 represents a clutch head or disk, which is mounted loosely upon therearwardly-projecting hub cl of the sprocket-wheel, so as to be movabletoward and from the clutch-face it. This clutch-head is provided withone or more clutch bars or members 2', four being shown, which projectforwardly through openings is in the hub-flange/c of the sprocketwheeland which are shaped at their front ends to engage the teeth of theclutch-face on the rear side of the pawl-disk. This clutch-head isprovided with suitable shifting meansfor instance, as shown, with anannular groove Z, in which a shifting-lever L engages. When theclutch-head is in 1ts rearmost position,

(shown in Fig. 2,) the clutch-bars 71 are with' drawn from theclutch-face of the pawl-disk and the sprocket-wheel is uncoupled fromthe pawl-disk and ground-wheel and remains idle. By shifting theclutch-head forwardly, so as to engage the clutch-bars with theclutch-face of the pawl-disk, the sprocket-wheel is coupled to thepawl-disk and rotated from the groundwheels. The pawl-disk beinginterposed between the ratchet-hub of the ground-wheel on one side andthe clutch mechanism and the driven sprocket-wheel on the other side,the driven sprocket-wheel is relieved to a large extent from the shocks,jolts, and jars which the ground-wheel receives in traveling over theground. As the sprocket-wheel is confined against lateral movementbetween the bearing and the pawl-disk and is not required to be movedlaterally in engaging or releasing the clutch, the chain mechanism isnot disturbed in engaging and disengaging the clutch, and theseoperations are effected easily and quickly.

Instead of a sprocket-wheel a gear-wheel or other rotary part or membermay be used, as the nature of the mechanism may require. Eachground-wheel is free to turn backwardly in a well-known manner.

I claim as my invention 1. The combination of a ground-wheel providedwith ratchet-teeth, an axle, a pawl and clutch disk secured to the axleand having on one side a pawl for engagement with said ratchet-teeth andon the other side a clutchface, a driven wheel which is held againstmovement toward and from the clutch-face, and a clutch member which ismovable toward and from said clutch-face and which engages said drivenwheel, substantially as set forth.

2. The combination of a ground-wheel provided with ratchet-teeth, apawl-disk provided with a pawl mechanism which engages said teeth andhaving on its rear side a clutch-face, a driven wheel, and a clutch-headprovided with a clutch-bar which movably engages said driven wheel andwhich is movable toward and from the clutch-face of said pawl-disk,substantially as set forth.

3. The combination of a ground-wheel provided with a ratchet-hub, apawl-disk having on its front side a pawl which engages said ratchet-huband on its rear side a clutch-face, a driven wheel, and a clutch-headwhich is movable toward and from said driven wheel and said pawl-diskand which is provided with a clutch-bar which movably engages saiddriven wheel and is adapted to also engage the clutch-face of saidpawl-disl substantially as set forth.

4. The combination of a ground-wheel provided with a ratchet-hub, apawl-disk having on its front side a pawl which engages said hub and onits rear side a clutch-face, a driven wheel loosely mounted upon the hubof said pawl-disk, and a clutch-head movably mounted upon the hub ofsaid wheel on the rear side thereof and provided with aforwardly-projecting clutch-bar which movably engages said wheel and isadapted to engage the clutchface of said pawl-disk, substantially as setforth.

Witness my hand this 9th day of May, 1904:.

JOSEPH SARGENT KEMP.

Witnesses:

A. T. WHEAT, GEORGE CHAMBERLAIN.

